At a distance of 39 ft , an ionizing radiation source delivers 7.0 rem of radiation. How close can you get to the source without having any biological effects? The intensity of the radiation increases as you move closer to the radiation source according to the equation I1 / I2 =D22/D12

Q: An unknown radioactive sample is placed in the well of a small lead holder which sits in an external…

A: solution is given as

Q: During an X-ray examination, a person is exposed to radiation at a rate of 2.80×10-5 grays per…

A: Energy absorbed Eabs=Dtmt Here, Dt is the absorbed dose per second given in Gy/s.

Q: What is the value of m for a particle that moves in a circle of radius 5 mm in a 0.5 T magnetic…

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Q: Give some examples of two types of radiations.

A: Radiation is defined as the energy which travels through space in the form of waves or particles.…

Q: What is the wavelength of gamma radiation with a frequency of 3.75 x 1020 Hz ? What is the energy of…

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Q: Regarding linear energy transfer (LET), which of the following is true? * The LET is the energy…

A: Linear energy transfer (LET) is the energy transferred to the biologic material per unit distance…

Q: A portable x-ray unit has a step-up transformer. The 120 V input is transformed to the 100 kV output…

A: V1 = 120 V V2 = 100 kV = 10^5 V I1 = 19.7 A N1 = 34

Q: A medical researcher is using a chromium-51 source to study red blood cells. The…

A: Given:- The The gamma emission  at a distance of d1 =  1.0 m The  intensity is I1 = 0.75 mrem/s· m 2…

Q: Which of the following will emit an EM WAVE? Choose all that apply. O A neutrino that is stationary.…

A: Given Different options are given We have to choose the correct option

Q: When you shine a certain source of em radiation on a sheet of gold. (Work function W1=5.1 eV) the…

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Q: A recent home energy bill indicates that a household used 335335 kWh (kilowatt‑hour) of electrical…

A: Given that, In 1-month energy bill The total electrical energy used is Ee=335335kWh and the total…

Q: If the intensity of radiation from a radioactive sources is 7.9 units at a distance of 4.4 m, how…

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Q: A person with lymphoma receives a dose of 35 gray in the form of gamma radiation during a course of…

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Q: 1.External Dosimetry is applicable to two types of radiations? 2.What type of material shield?

A: Radiation The energy that emanates from a source and moves through space at the speed of light is…

Q: 7. What is the wavelength of 300-keV gamma rays? A. 7.25x10 m B. 4.14x10 m C. 4.14×10¹2 m D. 7.25x…

A: Gamma rays are high-energy photons. Photons are considered packets of energy. Each photon will have…

Q: Assume the electric and magnetic field strengths in some region vary with time according to E =…

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Q: EM radiation has an average intensity of 2900 W/m2. Which of the following statements about the E or…

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Q: One way to sterilize food products such as meats and poultry is to irradiate them with a beam of…

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Q: The human body has a surface area of approximately 1.8 m2, a surface temperature of approximately…

A: Given: The area A = 1.8 m2. The temperature T = 30 0C =303 K. Emissivity e = 0.97.

Q: Some satellites use nuclear power. a. If such a satellite emits a 2 W flux of y rays having an…

A: Power P = 2 W.Energy Let N be the number of photon emitted per second.

Q: 11. One type of treatment for cancer is radiotherapy. Cancer cells die if they absorb a high enough…

A:

Q: Some satellites use nuclear power.…

A: The number of photons emitted per second is

Q: 8. 5 HVLS will decrease the radiation intensity to what percentage of the original?

A:

Q: Some satellites use nuclear power. a. If such a satellite emits a 2 W flux of  rays having an…

A: Power of the satellite Average energy of the satellite

Q: A -0.51 pC hypothetical charge weighing 34 fg travels in a circular path at 23 km/s that is…

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Q: Suppose we have an electron moving perpendicular to a B-field along a circular path of radius 18 cm.…

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Q: A healthy person has a body temperature of 98.6°. Use the properties of blackbody radiation to work…

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Q: The scientist changes the frequency of the incident X-ray to 4.50 x 10" Hz and measures the…

A: Given value--- changed frequency = 4.5 × 1019 Hz. measured wavelength = 4.32 × 1019 Hz. We have to…

Q: Which of the following electromagnetic waves are produced due to the radioactive decay of the…

A: Radioactive decay can be defined as the spontaneous breakdown of atomic nucleus leading to the…

Q: During an X-ray examination, a person is exposed to radiation at a rate of 5.8 x 10-5 grays per…

A:

Q: During X-ray diagnostics, lead aprons made of a thin layer of lead are used in order to protect…

A:

Q: A beam of protons is directed in a straight line along the positive z-direction through a region of…

A:

Q: lue laseT beam 1s incidehi on a Ime causing lo be ejectc ihe melal. II the frequency of the laser…

A: given, frequency of incident beam= increased intensity of laser beam = unchanged

Q: Ex/9: In an experiment to measure the charge on electron, the electrons travelling at a speed of…

A: To find-Magnetic induction (B)=?Given-Speed of electrons (v)=1.825×107 m/sElectric field (E)=3.2×104…

Q: A laser pointer used in the classroom emits light at 4650 Å, at a power of 4.00 mW. (One watt is the…

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Q: Which of the following will emit an EM WAVE? Choose all that apply. a. A proton moving in a circle…

A: Given Different options are given and we have to choose that option or options Which will emit an…

Q: Speed of an election passing undeviated the surge a leguen of veoss electic & magnetic fields of…

A: We need to compute-Speed of an electron (V)=?The data given as-Intensity of electric field (E)=4×105…

Q: Suppose you want to identify a bunch of particles using mass spectrometer. First, they are ionized…

A: When after ionization the charged particle enters the mass spectrometer region with velocity due to…

Q: Can any of these be classified as visible radiation? Determine the optimal course of action. t) Put…

A: The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation…

Q: What is the value of e/m for a particle that moves in acircle of radius 14 mm in a 0.86-T magnetic…

A: The expression for charge to mass ratio is, em=EB2r…